Book summary “Drop dead healthy”: summary

Introduction

You neglect your physical health while sitting at a desk, eating convenience foods, and ignoring subtle warning signs until your body breaks down. A sudden medical scare can force you to realize that you know less about maintaining your own body than you do about your car.

A. J. Jacobs tackles this problem by spending two years treating his body as a systems-engineering project. You can follow his journey as he consults hundreds of medical experts, anthropologists, and personal trainers to test every health advice available.

The book takes you on a head-to-toe tour of human biology. You will examine each organ system and lifestyle factor to separate proven science from wellness fads.

• What should you actually eat to maximize your lifespan?
• How can you move naturally without spending hours at the gym?
• Which environmental toxins do you need to avoid?
• Can you use your mind to heal your physical pain?

1. The Battle Plan and Stomach

You must establish your baseline health and take control of your diet by eliminating processed foods and managing portion sizes.

A family vacation to the Dominican Republic unexpectedly turned into a three-day hospital stay for severe tropical pneumonia, forcing you to confront your own mortality. While hospitalized and hooked up to an IV drip with multicolored unknown liquids, you might worry about never seeing your three sons grow up. At age 41, this terrifying medical emergency serves as a life-altering memento mori that sparks a commitment to health.

You visit Executive Health Enterprises in Rockefeller Center for a three-hour physical examination to quantify your physical state before starting the project. This EHE evaluation involves six vials of blood, forty-two tests, six nurses, and eleven minutes on a treadmill. The results reveal metrics such as a 5'11" height, 172 pounds, 18 body fat percentage, myopic vision, low hematocrit, a heart murmur, and elevated liver enzymes. Recognizing that striving for maximal health is overwhelming, you structure your project by focusing on individual body parts one at a time, beginning with the stomach.

Baseline Health Assessment

• Improve the body one part at a time
• Start the project with the stomach by focusing on what goes into the belly

Diet and Nutrition

Modern human food preferences represent an evolutionary mismatch where ancient survival instincts for calorie-dense foods clash with the modern environment. You face a world offering a 1,420-calorie Hardees Monster Thickburger compared to the average daily caloric intake of 2,500 calories recommended for an adult male. While most palatable foods are unhealthy, a few exceptions like dark chocolate, moderate alcohol, and coffee offer health benefits when consumed correctly.

Calorie restriction and mindful eating practices can heighten sensory appreciation of food while potentially extending lifespan. Proponents of CR argue that living on the edge of starvation reduces metabolic damage and free radicals. You can engage in savoring meditation by visualizing, smelling, and slowly tasting a single piece of food without biting into it immediately.

• Get small plates.
• Practice Chewdaism by chewing fifteen to twenty or as many as fifty times per mouthful.
• Turn off the TV while eating.
• Put the fork down in between bites.
• Bring your own tiny fork or chopsticks wherever you go.
• Repackage your pantry food into small Ziploc bags.
• Write a hundred-dollar check to a noxious group to forfeit if you break your diet.
• Eat in front of a mirror.
• Keep a digitally aged photo of your future self in your wallet.
• Consume an apple, a bowl of soup with cayenne pepper, two glasses of water, and a handful of nuts to suppress appetite.
• Eat a vegetable just like you would eat processed convenience foods.
• Ban white bread, white pasta, white tortillas, and potatoes from your plate.
• Make food crunchy by adding sunflower seeds to salads and fish.
• Shop the perimeter of the grocery store and avoid center aisles and eye-level placements.
• Eat meat only as a condiment to vegetables.
• Create pause points by putting snacks in separate dishes and leaving packaging in the kitchen.
• Eat protein and fats for breakfast to prevent blood sugar spikes.
• Eat your colors by consuming vegetables of different hues.
• Buy a steamer.

2. Exercise and Movement

You can combat the dangers of a sedentary lifestyle by incorporating incidental movement and natural workouts into your daily routine.

Combating Sedentary Life

Prolonged sitting and a sedentary lifestyle drastically increase the risk of heart disease, diabetes, obesity, and certain cancers. Standard gym workouts cannot fully undo this damage. Sitting halts the production of an essential enzyme called lipase, which helps muscles absorb fat and prevents arterial clogging.

The University of South Carolina and Pennington Biomedical Research Center compared men who sat for more than twenty-three hours a week versus those who sat less than eleven hours. They found a 64 percent higher chance of fatal heart disease for the heavy sitters. Men running a mile burned 124 calories compared to 88 calories walking a mile.

You can use contextual exercise, deskercise, or iPlod habits to stay active:

• Stand up or pace while watching entertainment.
• Switch to standing desks or treadmill desks to maintain movement throughout the day.
• Implement contextual or guerrilla exercise by running errands on foot.

A functional treadmill desk can be assembled cheaply at home without purchasing expensive commercial setups. Dr. Joe Stirt has maintained a walking speed of 2.0 mph for years, averaging three hours a day on his homemade treadmill desk setup.

You can build this setup using simple steps:

• Find a working treadmill on Craigslist for one hundred dollars or less.
• Test the treadmill to ensure it can handle 2 mph without sparking or smoking before paying.
• Stack crates, boxes, or furniture in front of the treadmill to support a computer screen at eye level.
• Lay a board across the treadmill handles for your keyboard and place books on top to elevate it.
• Start at 0.7 mph and gradually increase speed in 0.1 mph increments weekly.

Applying behavioral economics and visualizing one's aged future self helps overcome present-day resistance to healthy habits like exercising. Thomas Schelling's theory of egonomics posits that our present self and future self are often at odds. The author downloaded an iPhone app called HourFace to digitally age his photo, printed the resulting aged image, and taped it to his wall to motivate himself to run and exercise.

Alternative Workouts

The Paleo fitness movement advocates for returning to evolutionary roots by exercising outdoors in natural environments rather than enclosed gyms. Practitioners of MovNat argue that modern gym workouts isolate single muscles and are inefficient compared to natural movements over uneven terrain.

The author joined Erwan Le Corre, John Durant, and Vlad Averbukh in Central Park for the MovNat caveman workout, tossing boulders, running barefoot, and crawling along fallen logs. A Nippon Medical School study revealed a 50 percent spike in natural killer immune cells caused by two-hour walks in a forest.

You can adopt Mouvement Naturel principles in your daily life:

• Run elegantly like an animal by keeping muscles relaxed and leaning forward.
• Take short steps and land lightly on your toes without stomping.
• Let arms dangle naturally by your side instead of pumping them.
• Clamber along fallen logs on all fours to mimic a stalking tiger.

Muscles can be effectively exhausted and strengthened in a fraction of the time through slow-cadence, high-intensity weight lifting pushed to the point of failure.

The author visited InForm Fitness in Manhattan, run by Adam Zickerman, author of The Power of 10, and performed slow-cadence leg extensions and shoulder presses until reaching muscle failure. This hyperefficient slow fitness workout takes only 20 minutes a week. You lift 80 pounds on the leg extension machine or other weights using specific form.

You can perform slow-cadence training:

• Push on the foot platform or weight machine with a slow cadence of ten seconds up and ten seconds down.
• Continue the movement until reaching total muscle failure.

Everyday habits can be transformed into opportunities for physical activity without setting foot in a formal gym. You can introduce Incidental Physical Activity into your schedule.

You can follow these tactical suggestions:

• Resist the siren song of the People Mover at airports.
• Squat down to the level of kids when you talk to them.
• Park in the farthest corner of the parking lot.
• Embrace stairs, avoid elevators.
• Fidget, or engage in Incidental Physical Activity.
• Run your errands instead of driving or walking slowly.
• Have meetings while walking and talking quickly through office corridors.
• Have lunch while squatting.
• Adjust the TV by actually getting up and pressing buttons on the console.
• Wear a weight vest all day.
• Push the stroller and/or grocery shopping cart with the brakes on.
• Use your children as barbells.

3. Germs and Environment

You need to balance proper hygiene and toxin reduction without falling into irrational germphobia or extreme health obsessions.

Germs and Hygiene

Most bacteria are harmless, but media fearmongering creates germphobia while understating basic infection risks. Dr. Philip Tierno points out that humans walk around with 90 percent germ cells and 10 percent human cells. Only a small fraction of the 156,000 categories of germs are pathogenic.

Infectious disease remains a leading cause of death. Nosocomial infections kill 100,000 people in the United States annually. Germs in food sicken 76 million people in the United States each year.

The author enjoys watching media segments that use sensational metaphors, such as comparing door handle germs to the works of Joyce Carol Oates. This type of germ porn ignores that proper hand washing remains your best defense.

Eighty percent of all infections are transmitted by direct or indirect contact. Dr. Tierno demonstrates a virtuoso hand-washing performance in the lab bathroom while singing a birthday song.

• Splash water on hands and squirt liquid soap.
• Lather up for thirty seconds, scrubbing around the wrists, in between the fingers, and getting each nail.
• Sing the entire birthday song during washing to take your time.

An overly sanitized modern environment starves the developing immune system of necessary germ exposure. Proponents of the hygiene hypothesis argue that modern children lack sufficient exposure to microbes. This deficit prevents immune cells from learning to recognize threats properly and contributes to rising allergies and asthma.

The author's son Zane licks an ice-cream scoop off a New York pavement. Immunologist Mary Ruebush praises this action as a healthy exposure for a child.

Home and Toxins

Exposure to common chemical toxins can be minimized by consciously replacing household plastics, cookware, and personal care items. The author evaluates suspected toxins by weighing evidence of harm, environmental impact, time, and replacement cost. These calculations lead to specific lifestyle swaps.

Environmental activists view common household chemicals as dangerous endocrine-disrupting plastics. Pro-industry groups argue that such fears are overblown and that small doses are harmless. The American Cancer Society notes that 34,000 deaths a year are caused by environmental toxins. Industry uses 80,000 chemicals in industrial processes, of which the EPA has tested only 200.

Aunt Marti inspects an apartment and flags items like antibacterial soap containing triclosan, parabens in sunscreen, phthalates in shower curtains, and Wi-Fi radiation as dangerous hazards. Todd Seavey of the American Council on Science and Health argues that toxic fear is an evolutionary leftover from caveman minds dividing everything into food or poison.

Marti left her Toyota Corolla on the street with the window open for six months to let the upholstery emit noxious Deca flame retardant gases. The author replaced his plastic shower curtain with a cotton one to avoid potential phthalate exposure.

Noise pollution is an underappreciated health hazard that damages hearing, elevates stress and blood pressure, and impairs cognitive development. Continuous background noise triggers your body's fight-or-flight response, leading to chronic cardiovascular strain. A former WHO official estimate attributes 45,000 fatal heart attacks per year to noise-related cardiovascular strain. There are 26 million adults walking around with noise-induced hearing loss. Sounds above 85 decibels, such as leaf blowers, can cause permanent hearing loss. Researchers recorded 102 decibels at a Dave & Buster's restaurant and 110 decibels at a New York subway station entering. Children's tantrums can reach 91 decibels.

Arline Bronzaft conducted a landmark study showing that students in public school classrooms facing an elevated subway track were about one year behind in reading by the sixth grade compared to peers in quiet classrooms.

• Buy organic food, especially when purchasing items from the Environmental Working Group Dirty Dozen list.
• Cut fish consumption down to twice a week and avoid fish high on the food chain like marlin, swordfish, and tilefish.
• Check recycling codes on plasticware and toss anything with codes 3, 6, or 7 containing BPA.
• Avoid antibacterial soaps containing triclosan and switch to plain soap and alternative toothpaste.
• Switch nonstick cookware containing perfluorinated chemicals to stainless steel pots and pans.
• Use organic vegetable-based soap instead of antibacterial soap.
• Clean with vinegar and organic baking soda.
• Avoid plastics with recycling codes other than 1, 2, 4, and 5.
• Buy organic cotton, hemp, or bamboo clothing.

4. Mind and Pain Management

You can manage physical pain and mental stress through alternative therapies, behavioral hacks, and the power of the placebo effect.

Galina inserted a matchstick-size needle into the author's head along the lung channel, which surprisingly alleviated his chronic shoulder pain. Fake treatments are effective about 30 percent of the time and can cause the brain to release endorphins and other opioid-like substances, mimicking real medication. Children's pain vanishes instantly when a SpongeBob Band-Aid is applied, and brain imaging studies show placebos activate parts of the brain that release endorphins.

Dr. Gottesman diagnosed the author with significant hemorrhoids after learning that the author reads while using the bathroom. Proctologist Dr. Lester Gottesman warns that sitting and reading or writing on the toilet causes swelling of the veins in the anal canal, a condition affecting over 70 percent of Americans. An Israeli scientist found that subjects who squatted averaged 51 seconds per movement compared to 130 seconds for sitters, and the author installed a device called Nature's Platform to squat over his toilet.

Stress Management

While short-term stress can sharpen the immune system and increase alertness, chronic long-term stress elevates heart rate and constricts blood vessels, which ultimately suppresses immunity and promotes illness.

A study in the Journal of Clinical Immunology showed skydivers had 34 percent higher natural killer cells right before jumping, while another researcher found mouth wounds took 40 percent longer to heal during exam week. Hans Selye coined the term stress. The author attended a laughter club led by chiropractor Alex Eingorn in midtown Manhattan, practicing exercises like the oops-I-dropped-a-vase laugh and the sumo laugh. A University of Maryland study found a 40 percent lower rate of heart disease in big laughers, and a Vanderbilt researcher noted that 15 minutes of laughing burns 40 calories.

Stress can be systematically managed through physical self-care, outsourcing, and categorizing worries by controllability. The author uses a basset hound named Daisy as a foster pet to help lower stress levels.

To manage stress and eliminate bad habits:

• Perform daily self-massage on your shoulders, neck, and arms.
• Outsource your worries to another person or an outsourcing service like GetFriday.com.
• Meditate by focusing on a pulsating light on a MacBook in sleep mode and breathing in sync with it.
• Get a dog or cat.
• Sort all of your worries into Category A for things you can control and Category B for things out of your control.
• Do not read novels on the toilet.
• Do not write novels on the toilet.
• Keep magazines out of the bathroom.
• Install a squat-aiding apparatus over the toilet.
• Climb on top of the platform and squat.
• Shut the lid before flushing to prevent bacteria-ridden droplets from coating the bathroom.
• Practice the oops-I-dropped-a-vase laughter by miming fumbling a vase, shrugging, and laughing.
• Use the I'm late laugh by pointing to an invisible watch, shrugging, and giving a carefree laugh.
• Perform explosive laughter.
• Perform snort-filled laughter.
• Do the no-no-no laugh by wagging a finger at a fellow participant.
• Execute the laugh of retribution by flapping arms, saying bok bok bok, squatting briefly, and laughing.
• Chant ho, ho, ho, ha, ha, ha at the end of every round.

5. Brain, Sleep, and Senses

The brain possesses neuroplasticity, meaning its neural pathways and cognitive abilities can be strengthened, challenged, and improved throughout life rather than remaining fixed from birth.

By engaging in novel activities, memory tasks, logic puzzles, and physical exercise, you can stimulate neuroplasticity and increase levels of brain-derived neurotrophic factor. Aerobic exercise and physical movement improve brainpower, focus, memory, and mood in both the short and long term by increasing blood flow and neuroplasticity. According to Harvard psychiatrist John Ratey, physical activity triggers the release of neurotransmitters and proteins like BDNF that support cognitive function and stave off cognitive aging.

The author underwent brain mapping at the Brain Resource Center with Dr. Kamran Fallahpour, tried neurofeedback, and practiced crossword puzzles, math drills, and memorizing poetry.

You can upgrade your cognitive functions through targeted habits:

• Do crossword puzzles to help delay cognitive decline.
• Solve simple math equations nightly to stimulate the prefrontal cortex.
• Memorize passages and poems to improve fluency.
• Perform neurobic exercises by altering routine habits such as brushing teeth with the non-dominant hand or taking a new route.
• Perform aerobic exercise or physical movement such as walking or running to stimulate neurotransmitters.
• Engage in short bursts of physical activity like jumping jacks before tackling hard mental problems.

The human brain features 100 billion neurons. Brain exercises led to a 23 percent better score on an online intelligence test after a month. Forty minutes of daily exercise showed more academic improvement than 20 minutes in a Georgia student study.

Sleep Improvement

Snoring and mild sleep apnea can be mitigated through structural adjustments, mechanical aids, and throat-strengthening exercises, though severe cases require continuous airway pressure devices.

Snoring is caused by airway obstruction from a deviated septum, tongue collapse, or throat tissues, and correlates with serious health issues like heart disease and fatigue. Remedies range from breathing strips and anti-snore memory foam pillows to playing the didgeridoo and using CPAP machines. Counting backward by threes stops racing thoughts and induces sleep by providing just enough cognitive engagement to block work worries without being stimulating.

After visiting Dr. Steven Park and undergoing an overnight study at the Sleep Disorders Institute where he woke up 185 times and stopped breathing for forty-two seconds, the author was fitted with a CPAP machine.

You can improve your rest with these methods:

• Use a specialized anti-snore memory foam neck pillow to keep the head elevated and chin out.
• Apply a Breathe Right nasal strip across the nose to widen the nostrils.
• Practice daily throat and tongue exercises such as pucker-smile holds and tongue-flicking.
• Play the didgeridoo to strengthen throat muscles.
• Wear a CPAP machine with a face mask and air hose to keep airways open during sleep.
• Lie in bed with lights out ready to sleep.
• Pick a starting number such as four hundred.
• Count backward by subtracting three sequentially (400, 397, 394, etc.).
• Focus entirely on the math sequence until sleep onset occurs.
• Strap the Zeo headband onto your head before turning in for the night.
• Allow the device to measure brain waves and calculate REM, light, and deep sleep ratios.
• Review your nightly ZQ score and adjust pre-bed routines based on the data.

The author tested 20 snoring remedies over a two-week span. A specialized neck pillow achieved a 10 percent measured drop in snoring. A 2002 Oxford study showed that counting sheep actually delays sleep onset. The Zeo Personal Sleep Manager costs $199. The author's initial terrible ZQ sleep score was 44, which improved to 68 after one week, while his wife achieved a score of 99 on her first night.

10 Key Ideas

1. You must establish your baseline health and take control of your diet by eliminating processed foods and managing portion sizes.
2. You can combat the dangers of a sedentary lifestyle by incorporating incidental movement and natural workouts into your daily routine.
3. Muscles can be effectively exhausted and strengthened in a fraction of the time through slow-cadence, high-intensity weight lifting pushed to the point of failure.
4. You need to balance proper hygiene and toxin reduction without falling into irrational germphobia or extreme health obsessions.
5. Exposure to common chemical toxins can be minimized by consciously replacing household plastics, cookware, and personal care items.
6. You can manage physical pain and mental stress through alternative therapies, behavioral hacks, and the power of the placebo effect.
7. While short-term stress can sharpen the immune system and increase alertness, chronic long-term stress elevates heart rate and constricts blood vessels, which ultimately suppresses immunity and promotes illness.
8. The brain possesses neuroplasticity, meaning its neural pathways and cognitive abilities can be strengthened, challenged, and improved throughout life rather than remaining fixed from birth.
9. Snoring and mild sleep apnea can be mitigated through structural adjustments, mechanical aids, and throat-strengthening exercises, though severe cases require continuous airway pressure devices.
10. Applying behavioral economics and visualizing one's aged future self helps overcome present-day resistance to healthy habits like exercising.